public void InchesToPixelsTest()
{
const float length = 1F;
float actual = ConvertEx.InchesToPixels(length, DPI);
Assert.AreEqual(DPI, actual);
}
private void SetRulerRectangles()
{
int rulerWidth = (int)ConvertEx.InchesToPixels(_RulerLength, _Dpi);
int rulerHeight = Height - Padding.Top - Padding.Bottom;
_RulerRectangle = new Rectangle(Padding.Left, Padding.Top, rulerWidth, rulerHeight);
if (_RightOffset > 0)
{
int offsetInchPixels = (int)Math.Round(ConvertEx.InchesToPixels(_RightOffset, _Dpi));
int rightMarginOffsetHeight = _RulerRectangle.Height;
int rightMarginOffsetLeft = _RulerRectangle.Right - offsetInchPixels;
int rightMarginOffsetTop = _RulerRectangle.Top;
int rightMarginOffsetWidth = _RulerRectangle.Right - rightMarginOffsetLeft + 2;
_RightOffsetRectangle = new Rectangle(rightMarginOffsetLeft, rightMarginOffsetTop, rightMarginOffsetWidth, rightMarginOffsetHeight);
}
else
{
_RightOffsetRectangle = new Rectangle();
}
Invalidate();
}
protected float GetPixelsFromRuler(int paddingLeft, float rulerLength)
{
return(ConvertEx.InchesToPixels(FromRight ? (rulerLength - Inches) : Inches, Dpi) + paddingLeft);
}